Hunting for toxic chemicals in Donna

BOB OWEN/San Antonio Express-News

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An unidentified man fishes in the Donna Reservoir where previous sampling by the Texas Department of Parks and Wildlife has documented the presence of PCBs in fish tissue in the Donna Canal Reservoir System. Environmental scientists are currently testing water in canals and arroyos near Donna, TX. Tuesday, Sept. 25, 2012.

An unidentified man fishes in the Donna Reservoir where previous sampling by the Texas Department of Parks and Wildlife has documented the presence of PCBs in fish tissue in the Donna Canal Reservoir System. Environmental scientists are currently testing water in canals and arroyos near Donna, TX. Tuesday, Sept. 25, 2012.